romney held events in iowa, ohio and virginia. the race is a squeaker and political analysts believe we night not have a clear winner tuesday night if it comes down to provisional ballots in ohio that, by law, don't get counted right away. right away. >> unless the president ones overwhelmingly in florida and virginia and doesn't need ohio and also wins in wisconsin and iowa and nevada and new hampshire, if if comes down to ohio, we won't have a winner and we won't even have the votes as you said counted until 10 days from election day. >> reporter: the latest poll numbers out show president obama and mitt romney in a dead heat. a new abc news "washington post" poll has both candidates tied at 48%. obama takes the lead by one point in and nbc news "wall street journal" poll getting the support of 48% of likely voters to romney's 47%. today, president obama holds rallies in wisconsin, ohio and iowa. he will wrap up with with the evening rally in des moines. mitt romney will begin his final day of campaigning in central florida. he